On a jobsite in Kingsville, Texas, in August 2013, a worker was mixing gypsum concrete in preparation for gypcrete installation on an apartment building. It’s not a particularly taxing job, but he was doing it in direct sunlight. “He wasn’t training or doing anything that involved a lot of lifting or climbing,” says Holly Webster, director of administration at Texas-based KWA Construction, which served as the general contractor on the job.